• Sean Christopherson's avatar
    KVM: VMX: Add proper cache tracking for CR0 · bd31fe49
    Sean Christopherson authored
    
    
    Move CR0 caching into the standard register caching mechanism in order
    to take advantage of the availability checks provided by regs_avail.
    This avoids multiple VMREADs in the (uncommon) case where kvm_read_cr0()
    is called multiple times in a single VM-Exit, and more importantly
    eliminates a kvm_x86_ops hook, saves a retpoline on SVM when reading
    CR0, and squashes the confusing naming discrepancy of "cache_reg" vs.
    "decache_cr0_guest_bits".
    
    No functional change intended.
    Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
    Message-Id: <20200502043234.12481-8-sean.j.christopherson@intel.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    bd31fe49
kvm_host.h 50.6 KB